Set cached directory backend as readonly

Author: Ilja Bobkevic

lib/puppet_forge_server/backends/directory.rb

@@ -25,9 +25,10 @@ class Directory
     @@PRIORITY = 0
     attr_reader :PRIORITY
 
-    def initialize(url)
+    def initialize(url, readonly = false)
       @module_dir = url
       @log = PuppetForgeServer::Logger.get
+      @readonly = readonly
     end
 
     def query_metadata(query, options = {})
@@ -45,6 +46,7 @@ def get_file_buffer(relative_path)
     end
 
     def upload(file_data)
+      return false if @readonly
       filename = File.join(@module_dir, file_data[:filename])
       return false if File.exist?(filename)
       File.open(filename, 'w') do |f|

lib/puppet_forge_server/server.rb

@@ -93,7 +93,7 @@ def start(server, options)
     private
     def backends(options)
       # Add directory backend for serving cached modules in case proxy flips over
-      backends = options[:backend]['Proxy'] && ! options[:backend]['Proxy'].empty? ? [PuppetForgeServer::Backends.const_get('Directory').new(options[:cache_basedir])] : []
+      backends = options[:backend]['Proxy'] && ! options[:backend]['Proxy'].empty? ? [PuppetForgeServer::Backends.const_get('Directory').new(options[:cache_basedir], true)] : []
       backends << options[:backend].map do |type, typed_backends|
         typed_backends.map do |url|
           case type